    .tell-input {
        resize: none;
        border: none;
        outline: none;
        appearance: none;
        padding: 20px;
        font-size: 20px;
        color: rgb(0, 0, 0);
        width: 100%;
        height: 80%;
    }
    
    .tell-submit {
        display: block;
        position: absolute;
        cursor: pointer;
        bottom: 15px;
        right: 20px;
        width: 90px;
        height: 40px;
        border-radius: 10px;
        background-color: rgb(153, 153, 153);
        text-align: center;
        align-items: center;
    }
    
    .tell-submit-span {
        vertical-align: middle;
        line-height: 40px;
    }
    
    .w {
        display: block;
        width: 50%;
        height: 80%;
        margin: auto;
        margin-top: 100px;
    }
    
    .tell {
        width: 100%;
        height: 100%;
    }
    
    .tell-top {
        position: relative;
        width: 100%;
        height: 70%;
        background-color: rgb(218, 248, 252);
    }
    
    .tell-bottom {
        position: relative;
        width: 100%;
        height: 30%;
        background-color: pink;
    }
    
    .studentTitle {
        position: absolute;
        margin-bottom: -16px;
        width: 100%;
        height: 100%;
        bottom: 0;
        left: 0;
        overflow-y: scroll;
        scrollbar-track-color: cornflowerblue;
    }
    
    .teacherTitle-son,
    .studentTitle-son {
        display: inline-block;
        margin: 10px 0;
        margin-left: 10px;
        /* margin-right: 100px; */
        /* height: 30px; */
        border-radius: 13px;
        border: 1px solid rgb(0, 0, 0);
        color: rgb(0, 0, 0);
        padding: 0 10px;
        line-height: 30px;
        background-color: aliceblue;
    }
    
    .chat-active {
        float: right;
    }
    
    .chat {
        position: relative;
        display: inline-block;
        margin: 10px 0;
        margin-left: 10px;
        /* margin-right: 100px; */
        /* height: 30px; */
        border-radius: 13px;
        border: 1px solid rgb(47, 68, 255);
        color: hotpink;
        padding: 0 10px;
        line-height: 30px;
        /* overflow: hidden; */
    }
    
    .chat::after {
        position: absolute;
        content: "";
        top: 0;
        left: 0;
    }
    
    .getAsk {
        width: 100%;
        text-align: center;
        background-color: rgb(218, 248, 252);
    }
    
    .mask {
        position: absolute;
        z-index: 12;
        display: none;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: rgb(221, 219, 216);
    }
    
    .tell-close {
        position: absolute;
        right: 16px;
        top: 0px;
        float: right;
        width: 25px;
        height: 25px;
        line-height: 28px;
        font-size: 30px;
        /* border: 1px solid black; */
        /* border-radius: 50%; */
        text-align: center;
        cursor: pointer;
        color: rgb(97, 96, 96);
    }
    
    .tell-close1 {
        display: block;
        position: absolute;
        right: 45px;
        top: 0px;
        float: right;
        width: 25px;
        height: 25px;
        line-height: 28px;
        font-size: 20px;
        /* border: 1px solid black; */
        /* border-radius: 50%; */
        text-align: center;
        cursor: pointer;
        color: rgb(97, 96, 96);
    }
    
    .tell-close11 {
        display: none;
        position: absolute;
        right: 45px;
        top: 0px;
        float: right;
        width: 25px;
        height: 25px;
        line-height: 28px;
        font-size: 20px;
        /* border: 1px solid black; */
        /* border-radius: 50%; */
        text-align: center;
        cursor: pointer;
        color: rgb(97, 96, 96);
    }
    
    .tell-close2 {
        position: absolute;
        right: 75px;
        top: 0px;
        float: right;
        width: 25px;
        height: 25px;
        line-height: 28px;
        font-size: 20px;
        /* border: 1px solid black; */
        /* border-radius: 50%; */
        text-align: center;
        cursor: pointer;
        color: rgb(97, 96, 96);
    }
    
    .block {
        display: block;
        width: 100%;
        height: 100px;
        padding-left: 2%;
    }
    
    .tell-icons {
        padding: 0 10px;
        width: 100%;
        height: 20%;
        background: rgb(248, 248, 248);
    }
    
    .tell-icons li {
        display: inline-block;
    }
    
    .tell-icons li a {
        display: inline-block;
    }
    
    .tell-img {
        width: 30px;
        opacity: 0.8;
    }
    
    .tell {
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 10px 20px 20px 12px rgb(145, 143, 143);
    }
    
     ::-webkit-scrollbar {
        width: 10px;
        height: 100%;
        background: hsl(230deg 7% 61%);
    }
    
     ::-webkit-scrollbar-thumb {
        background-color: rgb(80, 80, 80);
        border-radius: 15px;
    }
    
    .xians {
        display: none;
        margin: 0 auto;
        width: 500px;
        height: 100px;
        background: rgb(192, 191, 191);
        text-align: center;
        align-items: center;
        cursor: pointer;
    }
    
    .xians span {
        vertical-align: middle;
        line-height: 100px;
    }